If sending $600,000,000, the amount that will go to fees is $11,400,000.1 and the recipient will receive $588,599,999.9. That's 1.9% going to fees, effectively.
* Using Domestic fee rate of 1.9% + $.10 (QR code - $10.01 and above)
To receive $600,000,000, a payment of $611,620,795.21 should be sent. $11,620,795.21 will go to fees. That's 1.9% in fees, effectively.